. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. OPHIOLEPIDAE 303 were found to have the gonads purely female; one specimen of 5 mm. has the gonads of purely male character, in another specimen of the same size the gonads contain only young eggs. There is thus no sign that the species is a protandric hermaphrodite. I have found two to three young ones in a bursa. They are rather robust, with only three short, thick arm joints, when ready to leave the mother. The ventral interradii are occupied almost wholly by the adoral shields, the buccal sh
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. OPHIOLEPIDAE 303 were found to have the gonads purely female; one specimen of 5 mm. has the gonads of purely male character, in another specimen of the same size the gonads contain only young eggs. There is thus no sign that the species is a protandric hermaphrodite. I have found two to three young ones in a bursa. They are rather robust, with only three short, thick arm joints, when ready to leave the mother. The ventral interradii are occupied almost wholly by the adoral shields, the buccal shield still lying on the dorsal side, which is otherwise covered only by the large primary plates. It is an interesting fact that the second mouth tentacle is here still lying wholly outside the mouth slits; the mouth papillae have not yet been formed (Fig. 31).. Fig. 31. Ophiozonella falklandica, Young, i, Dorsal side, 15. 2, Oral side, X30. a, Adoral plates, b. Buccal plate. Note that the tentacle scale at the first ventral plate has disappeared in the adult. Ophiozonella alba (Liitken and Mortensen) ('Albatross' Ophiuroids, pi. vi, figs. 7-9) would seem to be the nearest relation of the present species, differing from it mainly in its longer arm spines, and in the arm joints being more constricted. Also the first ventral plate is characteristically different—much narrower than in O. falklandica. Ophiozonella megaloplax, St. 939. 18. viii. 32. 35° 50' S, 173° 28' E, Cook Strait, New Zealand, 87 m. i specimen. Diameter of disk 3 mm., arms ca. 7 mm. Dorsal side of disk covered with few large plates among which there is only an occasional small scale. No regular rosette of primary plates, the central plate can scarcely be made out. The radial shields are con- tiguous, only a single small scale wedged in between them proximally; a column of two broad scales in the interradii. The ventral interradii almost wholly covered by a single large plate joining the small, tr
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